A slanted ejector core-pulling quick demolding structure for a 3C socket plastic mold
By introducing multiple ejector pins and spring-loaded energy-storing hammer designs into the 3C socket plastic mold, the problem of products being difficult to detach from the mold on their own has been solved, achieving automated and rapid demolding, improving production efficiency and reducing the risk of product damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUANG HIGH PRECISION MOLD (SUZHOU) CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-06-30
AI Technical Summary
Existing inclined core-pulling quick demolding devices have problems when processing injection molded products, especially 3C socket plastic molds. The products have deep and numerous grooves on the side, making it difficult for the products to detach from the mold on their own. They need to be manually forcibly removed, which is inefficient and can easily damage the products.
A slanted ejector core-pulling quick demolding structure for 3C socket plastic molds was designed. By setting multiple ejector rods and support columns in the mold, the ejector rods disperse the ejection force and the spring energy stores the impact, and with the help of the limiting plate and rubber ring, the product can be automatically demolded.
It enables automated and rapid demolding of 3C socket plastic molds, avoiding product sticking and deformation, improving production efficiency, and reducing the need for manual intervention.
Smart Images
Figure CN224426362U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rapid demolding technology for plastic molds, and more specifically, to a slanted core-pulling rapid demolding structure for a 3C socket plastic mold. Background Technology
[0002] Plastic products are products that use plastic as raw material, such as plastic sheets and plastic buckets. The production of existing plastic products requires the use of plastic molds. Plastic mold is a general term for a combination mold used for compression molding, extrusion, injection molding, blow molding, and low-foaming molding. Plastic molds mainly include a cavity mold with a variable cavity, which is composed of a cavity mold assembly base plate, a cavity mold component, and a cavity mold assembly clamping plate; and a punch mold with a variable core, which is composed of a punch mold assembly base plate, a punch mold component, a punch assembly clamping plate, a cavity cut-off component, and a side cut-off assembly plate.
[0003] The existing publication number is CN104859107B, which discloses a rack and pinion core-pulling demolding device for injection molds, including a straight pinion rack, an inclined pinion rack, a guide sleeve, an extension rod, and an inclined core-pulling block. This invention employs a slanted core-pulling block fixedly connected to the top of a slanted ejector rack. A straight ejector rack and a slanted ejector rack interlock and pass through a guide sleeve. The slanted core-pulling block slides within the core's mounting groove. The guide sleeve is fixedly connected to the core. The lower part of the straight ejector rack is fixedly connected to the top plate via an extension rod. During operation, the top plate drives the straight ejector rack upwards via the extension rod. Engaged with the straight ejector rack, the slanted ejector rack drives the slanted core-pulling block to move obliquely upwards and to the left. Simultaneously, the slanted core-pulling block pushes the product upwards, separating it from the core, and laterally pulls the core out from the deep undercut structure inside the product. This technical solution utilizes the slanted ejector rack's ability to adapt to large slanted ejection angles, enabling injection molds with deep undercut structures to achieve shorter ejection strokes, smaller mold dimensions, and lower mold manufacturing and operating costs. The inventors discovered the following problems with existing technologies during the development of this invention:
[0004] Existing inclined core-pulling quick demolding devices often encounter problems when demolding plastic products. Due to the deep and numerous grooves on the sides of the injection molded products, these grooves exert a strong covering force on the core-pulling block. During core-pulling demolding, the plastic product adheres to the demolding block, making it difficult for the product to detach from the mold on its own. Current technology requires manual forced removal of the product, which is inefficient and can damage the product, even causing deformation or scrapping.
[0005] Therefore, a slanted core-pulling quick demolding structure for 3C socket plastic molds is proposed to address the above problems. Utility Model Content
[0006] In order to overcome the above-mentioned defects of the prior art, this utility model provides a slanted core-pulling quick demolding structure for 3C socket plastic molds, so as to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a slanted-top core-pulling quick demolding structure for a 3C socket plastic mold, comprising a mounting frame, wherein a first fixing plate is fixedly connected to the inner side wall of the mounting frame; a first mold is fixedly connected to the bottom of the first fixing plate; a plurality of deep grooves are formed in the middle of the first mold; a push rod is slidably connected to the middle of the deep grooves; a sliding plate is fixedly connected to one end of the push rod; a support plate is fixedly connected to the bottom of the sliding plate; a sliding rod is slidably connected to the middle of the support plate; a square plate is fixedly connected to the end of the sliding rod; and the square plate is fixedly connected to the mounting frame.
[0008] Preferably, the inner sidewall of the mounting bracket is provided with a sliding groove; a slider is slidably connected in the middle of the sliding groove; a second fixing plate is fixedly connected to the bottom of the slider; and a second mold is fixedly connected to the bottom of the second fixing plate.
[0009] Preferably, a top block is fixed to the end of the top rod; the top block is located in the middle of the first mold.
[0010] Preferably, a first limiting plate is fixedly connected to one end of the slide rod; a second limiting plate is fixedly connected to the middle of the slide rod; the second limiting plate and the square plate are fixedly connected.
[0011] Preferably, a first support column is fixedly connected to the side wall of the second mold; an aluminum plate is fixedly connected to the end of the first support column; a second support column is slidably connected to the middle of the aluminum plate; a third limiting plate is fixedly connected to the end of the second support column; a spring is slidably connected to the middle of the second support column; the spring is located between the third limiting plate and the aluminum plate.
[0012] Preferably, a convex block is fixedly connected to the side wall of the first mold; a concave block is installed on the side wall of the convex block; and the connection is fixed.
[0013] Preferably, a rubber ring is fixed to the side wall of the support plate; the rubber ring is wrapped around the middle of the slide rod.
[0014] Preferably, the mounting frame has a discharge trough in the middle; a protective cotton is fixed to the top of the discharge trough.
[0015] The technical effects and advantages of this utility model are as follows:
[0016] 1. Compared with the prior art, the inclined core-pulling quick demolding structure of the 3C socket plastic mold is equipped with ejector pins, deep grooves and other settings, so that the slide plate moves forward and drives the ejector pins to slide in the middle of the deep groove. The first mold remains in place, and the ends of multiple ejector pins can push the workpiece out together for demolding. Because the ejector pins are set in multiple ways, the ejection force can be distributed, avoiding the problem that the workpiece is covered and stuck to the demolding block due to single-point force, making it difficult for the product to detach from the mold on its own.
[0017] 2. Compared with the prior art, the inclined core-pulling quick demolding structure of the 3C socket plastic mold has a first support column and an aluminum plate on the side wall of the second mold. When the second support column is pulled, the third limiting plate moves upward. At this time, the spring is compressed and deformed to generate potential energy. Then the second support column is released, and the spring releases its elastic potential energy, pushing the third limiting plate to knock on the second mold, thus avoiding the workpiece from sticking to the inner wall of the second mold. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0019] Figure 2 This is a schematic diagram of the top block of this utility model.
[0020] Figure 3 This is a schematic diagram of the slide bar of this utility model.
[0021] Figure 4 This is a schematic diagram of the aluminum plate of this utility model.
[0022] The attached figures are labeled as follows: 1. Mounting bracket; 11. First fixing plate; 12. First mold; 13. Deep groove; 14. Top rod; 15. Slide plate; 16. Support plate; 17. Slide rod; 18. Square plate; 2. Slide groove; 21. Slider; 22. Second fixing plate; 23. Second mold; 3. Top block; 4. First limiting plate; 41. Second limiting plate; 5. First support column; 51. Aluminum plate; 52. Second support column; 53. Third limiting plate; 54. Spring; 6. Convex block; 61. Concave block; 7. Rubber ring; 8. Discharge groove; 81. Protective cotton. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Example 1
[0025] As attached Figures 1 to 4 The diagram shows a slanted-top core-pulling quick-release structure for a 3C socket plastic mold, comprising a mounting frame 1, a first fixing plate 11 fixed to the inner side wall of the mounting frame 1; a first mold 12 fixed to the bottom of the first fixing plate 11; a plurality of deep grooves 13 formed in the middle of the first mold 12; a push rod 14 slidably connected to the middle of the deep grooves 13; a slide plate 15 fixed to one end of the push rod 14; a support plate 16 fixed to the bottom of the slide plate 15; a slide rod 17 slidably connected to the middle of the support plate 16; a square plate 18 fixed to the end of the slide rod 17; and the square plate 18 fixed to the mounting frame 1.
[0026] Specifically, when demolding the workpiece, the slide plate 15 first moves forward, causing the ejector pins 14 to slide in the middle of the deep groove 13. At this time, the support plate 16 slides in the middle of the slide bar 17, and the first mold 12 remains in its original position. The ends of the multiple ejector pins 14 can eject the workpiece together for demolding. The workpiece in the middle of the first mold 12 can be ejected through the ends of the ejector pins 14. Since there are multiple ejector pins 14, the ejection force can be distributed, avoiding the problem of the workpiece sticking to the demolding ejector pins 14 due to single-point force, making it difficult for the product to detach from the mold on its own.
[0027] Example 2
[0028] Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 4 As shown below, see details:
[0029] In a preferred embodiment, a groove 2 is provided on the inner side wall of the mounting bracket 1; a slider 21 is slidably connected to the middle of the groove 2; firstly, the slider 21 slides in the middle of the groove 2; a second fixing plate 22 is fixedly connected to the bottom of the slider 21; the slider 21 drives the second fixing plate 22 to move; a second mold 23 is fixedly connected to the bottom of the second fixing plate 22; the second mold 23 is driven to move, at which time the plastic mold is adhered to the middle of the first mold 12.
[0030] In a preferred embodiment, a top block 3 is fixedly connected to the end of the push rod 14; the top block 3 is located in the middle of the first mold 12; the push rod 14 pushes the top block 3 to contact the surface of the workpiece first.
[0031] In a preferred embodiment, a first limiting plate 4 is fixedly connected to one end of the slide rod 17, which can limit the support plate 16; a second limiting plate 41 is fixedly connected to the middle of the slide rod 17; the second limiting plate 41 is fixedly connected to the square plate 18. When the support plate 16 slides in the middle of the slide rod 17, the first limiting plate 4 can prevent it from sliding out of the middle of the slide rod 17.
[0032] In a preferred embodiment, a first support column 5 is fixedly connected to the side wall of the second mold 23; an aluminum plate 51 is fixedly connected to the end of the first support column 5; a second support column 52 is slidably connected to the middle of the aluminum plate 51; when the second support column 52 is pulled, the third limiting plate 53 moves upward; the third limiting plate 53 is fixedly connected to the end of the second support column 52; a spring 54 is slidably connected to the middle of the second support column 52; at this time, the spring 54 is compressed and deformed to generate potential energy; the spring 54 is located in the middle of the third limiting plate 53 and the aluminum plate 51, and then the second support column 52 is released, at which time the spring 54 releases elastic potential energy and pushes the third limiting plate 53 to strike the second mold 23.
[0033] In a preferred embodiment, a convex block 6 is fixedly connected to the side wall of the first mold 12; when the first mold 12 and the second mold 23 are combined, the convex block 6 is embedded in the groove in the middle of the concave block 61; the concave block 61 is installed on the side wall of the convex block 6; this arrangement can reduce the gap between the first mold 12 and the second mold 23 when they are combined.
[0034] In a preferred embodiment, a rubber ring 7 is fixedly connected to the side wall of the support plate 16; when the support plate 16 slides, it drives the rubber ring 7 to slide together; the rubber ring 7 is wrapped around the middle of the slide rod 17; this arrangement can clean the dust in the middle of the slide rod 17.
[0035] In a preferred embodiment, the mounting frame 1 has a discharge groove 8 in the middle; the demolded workpiece falls into the middle of the discharge groove 8; a protective cotton 81 is fixed to the top of the discharge groove 8; the top of the discharge groove 8 can be physically protected to prevent the workpiece from being bumped and dented.
[0036] In this embodiment, the first mold 12, the ejector pin 14, etc. are all commercially available equipment known to those skilled in the art. They can be customized or selected according to actual needs. Here we are just using them without making any structural or functional improvements, so we will not go into detail here.
[0037] The working process of this utility model is as follows: First, when demolding the workpiece, the second support column 52 is pulled and the third limiting plate 53 moves upward. At this time, the spring 54 is compressed and deformed to generate potential energy. Then, the second support column 52 is released, and the spring 54 releases its elastic potential energy, pushing the third limiting plate 53 to strike the middle of the second mold 23. Then, the slider 21 slides in the middle of the groove 2. The slider 21 drives the second fixing plate 22 to move, which in turn drives the second mold 23 to move and open the mold. At this time, the plastic mold is stuck to the middle of the first mold 12. Then, the slide plate 15 moves forward, which drives the ejector rod 14 to slide in the middle of the deep groove 13.
[0038] At this time, the support plate 16 slides in the middle of the slide bar 17, causing the rubber ring 7 to slide together. The first mold 12 remains in its original position. The ends of the multiple ejector rods 14 can push the ejector block 3 to contact the workpiece surface first, and eject the workpiece together for demolding. When the support plate 16 slides, the first limiting plate 4 and the second limiting plate 41 can limit the support plate 16. When the first mold 12 and the second mold 23 are combined, the convex block 6 is embedded in the groove in the middle of the concave block 61 to reduce the gap between them. The demolded workpiece falls into the middle of the discharge groove 8. The top of the discharge groove 8 is fixed with protective cotton 81. It can provide physical protection for the top of the discharge groove 8 to prevent the workpiece from hitting its surface and causing dents. The above is the working principle of the inclined core pulling quick demolding structure of the 3C socket plastic mold.
Claims
1. A slanted core-pulling quick demolding structure for a 3C socket plastic mold, comprising a mounting bracket (1), characterized in that: The mounting frame (1) has a first fixing plate (11) fixedly connected to its inner side wall; the first fixing plate (11) has a first mold (12) fixedly connected to its bottom; the first mold (12) has a plurality of deep grooves (13) in the middle; a top rod (14) is slidably connected to the middle of the deep grooves (13); a sliding plate (15) is fixedly connected to one end of the top rod (14); a support plate (16) is fixedly connected to the bottom of the sliding plate (15); a sliding rod (17) is slidably connected to the middle of the support plate (16); a square plate (18) is fixedly connected to the end of the sliding rod (17); the square plate (18) is fixedly connected to the mounting frame (1).
2. The inclined core-pulling quick demolding structure for a 3C socket plastic mold according to claim 1, characterized in that: The mounting bracket (1) has a sliding groove (2) on its inner side wall; a slider (21) is slidably connected in the middle of the sliding groove (2); a second fixing plate (22) is fixedly connected to the bottom of the slider (21); a second mold (23) is fixedly connected to the bottom of the second fixing plate (22).
3. The inclined core-pulling quick demolding structure for a 3C socket plastic mold according to claim 1, characterized in that: The top rod (14) is fixed to a top block (3) at its end; the top block (3) is located in the middle of the first mold (12).
4. The inclined core-pulling quick demolding structure for a 3C socket plastic mold according to claim 1, characterized in that: One end of the slide rod (17) is fixedly connected to a first limiting plate (4); a second limiting plate (41) is fixedly connected to the middle part of the slide rod (17); the second limiting plate (41) and the square plate (18) are fixedly connected.
5. The inclined core-pulling quick demolding structure for a 3C socket plastic mold according to claim 2, characterized in that: The second mold (23) has a first support column (5) fixedly connected to its side wall; an aluminum plate (51) is fixedly connected to the end of the first support column (5); a second support column (52) is slidably connected to the middle of the aluminum plate (51); a third limiting plate (53) is fixedly connected to the end of the second support column (52); a spring (54) is slidably connected to the middle of the second support column (52); the spring (54) is located between the third limiting plate (53) and the aluminum plate (51).
6. The inclined core-pulling quick demolding structure for a 3C socket plastic mold according to claim 1, characterized in that: The first mold (12) has a convex block (6) fixedly connected to its side wall; the convex block (6) has a concave block (61) installed on its side wall.
7. The inclined core-pulling quick demolding structure for a 3C socket plastic mold according to claim 1, characterized in that: A rubber ring (7) is fixed to the side wall of the support plate (16); the rubber ring (7) is wrapped around the middle of the slide rod (17).
8. The inclined core-pulling quick demolding structure for a 3C socket plastic mold according to claim 2, characterized in that: The mounting frame (1) has a discharge trough (8) in the middle; a protective cotton (81) is fixed to the top of the discharge trough (8).